2009 · ソースブック（プレイを拡張するルール／オプション）

GURPS Thaumatology: Urban Magics

This GURPS supplement explores magic in urban fantasy settings, covering magical organizations, city-supported practices, sacred architecture, urban divination, ley lines, and the gods, spirits, and monsters that inhabit cities. It provides rules and options for using magic to operate essential services such as lighting, water, power, and sewage, along with templates for characters with varied magical abilities. Eight campaign ideas support city-focused play, including enchanted investigations, magical schools, and intrigue among mystic estates. The material also helps create magical cities, organize mages’ guilds, and develop campaigns centered on a city’s unique supernatural character.